ROBBE Crown III Instrucciones De Montaje Y Manejo página 5

Fig. 22
- Sand the cut edges of the cabin smooth using abrasive
paper.
Fig. 23
- Mask off the front screen, paint the cabin in the colour
scheme of your choice and apply the decals.
Fig. 24
- Place the cabin on the model.
Fig. 25
- The next step is to balance the rotor blades.
- Fix the two rotor blades together by passing a screw
through both root holes; secure it with washers and a nut.
- Set the temporarily joined rotor blades in a straight line,
and support them in the centre.
- The lighter blade is the one that rises; apply adhesive tape
to it until the blades balance exactly level.
Fig. 26
- Fix the rotor blades to the blade holders using M 2.5 x 15
screws and M 2.5 nuts.
- Tighten the screws just to the point where the rotor blades
can still swivel smoothly in the blade holders.
Fig. 27
- Please note when transporting the model: swing both
main rotor blades back towards the tail and set them par-
allel - don't rest one on top of the other.
- We recommend that you protect the blades in transit using
a suitable blade support.
Assembly instructions
Crown III
Fig. 28
Centre of Gravity
- The correct Centre of Gravity (C.G.) is at the front edge of
the main rotor shaft. Adjust the position of the flight bat-
tery until the model balances at the stated point.
Setting up the radio control system
Basic requirement:
You need a radio control system designed for helicopter use.
Check that the servos are connected to the receiver in the
sequence described in the operating instructions.
Procedure:
- For reasons of safety disconnect the motor from the
speed controller.
- Switch on the transmitter
- Select a vacant model memory
- Program the model memory to the „Heli" mixer type
- Set the swashplate mode to „H1"
- Activate the tail rotor mixer (Revo-Mix) if required by the
gyro you are using
- Program the system for a right-hand rotation main rotor
- Set all transmitter sticks and trims to centre
- Do not set up any trim memories or freely programmable
mixers
- Program throttle trim to idle trim (ATL - throttle trim active
only at idle end of range)
- Switch on the receiving system (connect flight battery to
speed controller).
Adjusting the collective pitch actuator Y-01
- Ensure that the collective pitch servo is exactly at neutral.
- Use a pitch gauge to set the pitch angle of both main rotor
blades to + 3° to +4°.
- In this position tighten the socket-head screw in the collet.
- Set the collective pitch maximum to +7° to +8° , collective
pitch minimum to 0° to +1°.
5
Setting up the servos for roll and pitch-axis movements
- Note: with an H1 swashplate linkage the swashplate tilt
corresponds to the helicopter's direction of flight.
- Check the direction of travel of the servos.
- Apply a roll command to the right: the swashplate
should tilt to the right as seen from the tail of the model.
- Use the servo reverse facility on your transmitter if any of
the servos moves in the wrong direction.
- Apply a forward pitch (forward cyclic) command: the
swashplate should tilt forward.
- Use the servo reverse facility on your transmitter if any of
the servos moves in the wrong direction.
Setting up the tail rotor servo
Note:
Fold the tail rotor blades together as shown in the drawing.
When you move the tail rotor stick to the right, the tip of the
top blade should also move to the right (away from the tail
boom).
- Reverse the tail rotor servo if necessary.
Checking the direction of gyro effect (fig.)
Kreiselwirkrichtungskontrolle = Checking the direction of
gyro effect
Set the gyro to maximum gain.
Swing the tail boom briskly to the right (i.e. the helicopter's
nose moves to the left).
With the tail rotor blades still folded together, the tip of the
top blade should now move away the tail boom („Re" in the
drawing).
Reverse the gyro direction if necessary. If your gyro is a sim-
ple type without a reversing switch (e.g. G 200), invert the
gyro element.
Adjusting blade tracking (fig.)
Einstellen Blattspurlauf = Adjusting blade tracking
When you first operate the model you will need to check and
adjust blade tracking.
Order No.
S 2610